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Now showing items 20809-20828 of 41985
Hydro-mechanical behaviour of compacted binary mixtures : an experimental study
This research focusses on an experimental investigation on the hydro-mechanical behaviour of binary ‘all-one’ mixtures. These mixtures –originated from the excavation of selected materials during earthwork constructions– ...
Hydro-mechanical behaviour of pellet/powder mixture of bentonite and impact of gas migration
The hydro-mechanical behaviour of MX80 bentonite pellet-based mixture (80% high-density pellets in dry mass and crushed granular powder) has been explored in this thesis within the context of the French ‘Vertical Sealing ...
Hydro-social transformations in the Lake Urmia basin, Iran
Les alteracions antropogèniques a gran escala dels fluxos d'aigua a través de la infraestructura hidràulica són la manifestació dels imaginaris hidrosociales de grups políticament i social poderosos que, sovint, produeixen ...
Hydroacylation and C-N Coupling Reactions. Mechanistic Studies and Application in the Nucleoside Synthesis
The PhD work "Hydroacylation and C-N coupling Reactions. Mechanistic Studies and Application in the Nucleoside Synthesis" tackle two different objectives, a) developing new methods of synthesis of nucleosides (introduction, ...
Hydrocalumite-based catalysts for glycerol revalorization
En la producció de biodièsel s’obté glicerol com a subproducte en grans quantitats, generant-se un gran excedent. Per tant, és necessari buscar noves vies de transformació de glicerol en productes de major valor afegit, ...
Hydrocarbons in the open ocean waters near the Galician Bank after the deep sea spill from the Prestige wrecks
Hoy en día existe una escasez de estudios sobre la distribución de los hidrocarburos en mar abierto, aunque el aumento de la explotación de yacimientos de petróleo y la intensificación del tráfico marítimo más allá de la ...
Hydrodechlorination of chlorinated organic wastes over pd supported mixed oxide catalysts
Environmental pollution by polychlorinated chlorinated organic wastes is of great concern. Catalytic hydrodechlorination is considered clean and efficient methodology for safe disposal of chlorinated organic wastes. This ...
Hydrodynamic and biochemical Computational Fluid Dynamic modelling of full-scale anaerobic digesters for wastewater treatment
Anaerobic digestion is one of the most widely used biological treatments for the stabilisation of sewage sludge, but the effectiveness of the process depends on good mixing. The Computational Fluid Dynamics (CFD) technique ...
Hydrodynamic characterisation of aquaculture tanks and design criteria for improving self-cleaning properties
El propòsit del treball es caracteritzar hidrodinàmicament els tancs més utilitzats en el sector aqüícola, i donar pautes de disseny per millorar-ne l'autoneteja, i optimitzar l'eficiència d'utilització tant de l'espai com ...
Hydrodynamic effects on active colloidal suspensions
The goal of this thesis is studying hydrodynamic effects on active colloidal suspensions. Hydrodynamic interaction is propagated through the fluid in which the colloids displace due to the flow they create during their ...
Hydrodynamic models of accretion onto rotating compact stars
(English) Hydrodynamic models are essential for our understanding of the physics of stellar explosions, and specifically, for their potential contribution to the Galactic chemical abundances. In this Work, a one-dimensional ...
Hydrodynamic response of a shallow and microtidal estuary : Alfacs Bay. From high to low frequency processes
Using both observations and modelling tools, it is investigated the main hydrodynamic response mechanisms of a microtidal and shallow bay in the Mediterranean Sea: Alfacs Bay. Main objectives are considered using differenttim ...
Hydrodynamics and geochemistry at multiple scales : characterizing preferential flow-paths and wormholes in evaporitic sediments
The characterization of evaporitic aquifers for a better understanding of hydrodynamics and geochemical processes is of great importance, especially in environments where both the sustainability of unique ecosystems and ...
Hydrodynamics of flat plates in cross-flow near the free surface
Aquesta tesi presenta els resultats d'un estudi realitzat per comprendre l'efecte de la superfície lliure sobre les forces generades per una placa plana que es mou en un fluid estacionari, de manera que la superfície de ...
Hydrodynamics of pitching foils: flexibility and ground effects
En termes de propulsió la rigidesa flexural i l'efecte terra en una placa rectangular en piteig pur han estat investigats. Velocimetria per imatges per partícules, mesures de forces i moments amb una cèl·lula de carga de ...
The Hydroformylation Reaction: from Covalent to Supramolecular Approaches and Operando Kinetic Studies
S’ha estudiat la hidrofomilació d΄al·lens 1,1΄-disubstituïts catalitzada per rodi, emprant lligands de tipus bisfosfit amb un centre de regulació allunyat del centre catalític. L'ús de sals de metalls alcalins de BArF com ...
Hydrogel co-networks of gelatin methacryloyl and poly(ethylene glycol)diacrylate sustain 3D functional in vitro models of intestinal mucosa
Conventional in vitro cell culture models do not possess the complexity that the native tissues offer. Because of this, the functional properties of the tissues are not properly mimicked, which causes poorly predictive ...
Hydrogels based on short amphipathic peptides: self-assembly studies and apllications
I. Tema y objetivos de la tesis Debido a la estrecha relación entre el auto-ensamblaje de péptidos y proteínas con las enfermedades de tipo amiloide,(1) entender los principios que gobiernan este fenómeno resulta de ...
Hydrogen production from bioethanol using cobalt hydrotalcites
Hydrogen constitutes a promising alternative to manage our energy supply more efficiently. Hydrogen can be stored and used in fuel cells to produce electricity, where it combines with the oxygen present in the air and ...
Hydrogen production from wastewater in single chamber microbial electrolysis cells: studies towards its scaling-up
Les cel·les microbianes d’electròlisi (MEC) són sistemes biocatalitzats que ofereixen la possibilitat de valoritzar aigües residuals produint hidrogen, el qual és un bon vector energètic i un reactiu àmpliament utilitzat ...
